Wearable device

Abstract

A wearable device is disclosed, which comprising: a device body ( 100 ) provided with a controller; two straps, ends of the two straps are connected to two ends of the device body ( 100 ) respectively, and other ends of the two straps are connected to each other and are partially overlapped; a length measurement mechanism comprising a detection part and a color sensor respectively provided on the two straps, the color sensor is electrically connected to the controller, and a color of the detection part identified by the color sensor represents the overlapping length between the two straps; and a tightness adjustment mechanism provided on the straps, the overlapping length between the two straps are adjusted by the tightness adjustment mechanism, so as to adjust a tightness of the wearable device, therefore providing the wearable device capable of more accurately adjusting the tightness.

What is claimed is: 
     
         1 . A wearable device comprising:
 a device body provided with a controller;   two straps, wherein one end of one of the two straps and one end of the other one of the two straps are connected to one end and the other end of the device body, respectively, and the other end of the one of the two straps and the other end of the other one of the two straps are connected to each other and are partially overlapped;   a length measurement mechanism comprising a detection part and a color sensor respectively provided on the two straps, wherein the color sensor is electrically connected to the controller, and a color of the detection part identified by the color sensor represents an overlapping length between the two straps; and   a tightness adjustment mechanism provided on the straps, wherein the overlapping length between the two straps are adjusted by the tightness adjustment mechanism, so as to adjust a tightness of the wearable device.   
     
     
         2 . The wearable device of  claim 1 , wherein a plurality of detection parts are provided, and the plurality of detection parts are distributed at different positions along a length direction of the strap, and
 wherein the detection parts at different positions are coated with UV paint or phosphor of different colors; or   wherein the detection parts at different positions are provided with light sources of different colors.   
     
     
         3 . The wearable device of  claim 1 , wherein the straps comprise a first strap and a second strap,
 wherein the tightness adjustment mechanism comprises an adjustment member provided at an end of the first strap and a gear rack structure provided at the second strap, the adjustment member comprises a body portion, the body portion is provided with an adjustment cavity, and at least the gear rack structure is movable in and out of the adjustment cavity,   wherein, the adjustment member further comprises a hook member rotatably provided in the adjustment cavity and have a first state and a second state,   wherein, in the first state, the hook member is engaged with the gear rack structure and drives the adjustment member to move, which drives the hook member to move relative to the gear rack structure, to change a length of the gear rack structure inserted into the adjustment cavity, so as to increase a length of the second strap overlapping with the first strap, and   wherein, in the second state, the hook member is disengaged from the gear rack structure, so that the second strap moves in a direction of retracting from the adjustment cavity, so as to reduce a length of the second strap overlapping with the first strap.   
     
     
         4 . The wearable device of  claim 3 , wherein the gear rack structure comprises a plurality of tooth slots spaced apart from each other, and in the first state, the hook member is engaged in the tooth slots, wherein the tooth slots are detection parts; and
 wherein the color sensor is disposed at the hook member, the hook member is engaged in different tooth slots, so as to change the overlapping length between the two straps, to be correspond to the color identified by the color sensor.   
     
     
         5 . The wearable device of  claim 2 , wherein the tightness adjustment mechanism further comprises a rotating shaft rotatably provided at the adjustment member, and the hook member is fixedly connected to the rotating shaft. 
     
     
         6 . The wearable device of  claim 5 , wherein one mounting hole is provided on each of opposite sides of the adjustment member, and each of two ends of the rotating shaft is respectively installed in one mounting hole, at least one end of the rotating shaft is provided with a toggle portion, the toggle portion is exposed outside the adjustment member, and driving of the toggle portion drives the hook member to switch between the first state and the second state. 
     
     
         7 . The wearable device of  claim 5 , wherein the tightness adjustment mechanism further comprises an elastic member, and the elastic member can act on the hook member, so that the hook member in the second state has a tendency to move to the first state. 
     
     
         8 . The wearable device of  claim 7 , wherein the elastic member is a torsion spring sleeved on the rotating shaft, the torsion spring comprises a spring body and a first torsion arm and a second torsion arm respectively connected to two ends of the spring body, the first torsion arm is fixedly connected to the adjusting member, and the second torsion arm abuts against the hook member. 
     
     
         9 . The wearable device of  claim 2 , wherein the gear rack structure comprises a plurality of tooth slots disposed spaced apart from each other, the hook member has an engaging end, and in the first state, the engaging end is obliquely engaged in the tooth slots,
 wherein, the tooth slot has opposite first and second sides, the hook member moves from the first side of one tooth slot to another tooth slot adjacent to the one tooth slot to increase the overlapping length between the two straps,   wherein, at the first side, each of the tooth slots is provided with a guide slope parallel to the engaging end, and the guide slope is configured to guide the engaging end to enter another tooth slot adjacent to the one tooth slot from the first side, and/or   wherein at the second side, each of the tooth slots is provided with a stop surface, and the stop surface is disposed at an acute or a right angle with respect to a bottom wall of each of the tooth slots, to limit the engaging end from entering another tooth slot adjacent to the one tooth slot from the second side.   
     
     
         10 . The wearable device of  claim 1 , wherein the wearable device is a wrist-worn device, and the wrist-worn device has an electrocardiographic monitoring function,
 wherein the tightness adjustment mechanism comprises an adjustment member provided at an end of one of the straps, and the other strap is movably connected to the adjustment member, a monitoring electrode electrically connected to the controller is located outside the device body and/or the adjustment member, and at least two monitoring electrodes are provided for electrocardiographic monitoring, and   wherein the wrist-worn device has a wearing side, at least one monitoring electrode is arranged on the wearing side, and at least one monitoring electrode is arranged on another position except the wearing side.   
     
     
         11 . The wearable device of  claim 10 , wherein the monitoring electrode comprises a first monitoring electrode arranged on the wearing side and a second monitoring electrode arranged at another position,
 wherein the device body is provided with at least one first monitoring electrode and one second monitoring electrode, and the adjustment member is provided with at least one first monitoring electrode; or   the device body is provided with at least one first monitoring electrode, and the adjustment member is provided with at least one second monitoring electrode.   
     
     
         12 . The wearable device of  claim 1 , wherein the wearable device further comprises a tightness sensing member electrically connected to the controller, and the tightness sensing member is provided on a wearing side of the wearable device and is configured to detect the tightness of the wearable device. 
     
     
         13 . The wearable device of  claim 12 , wherein the tightness sensing member is a pressure sensor, and a pressure value detected by the pressure sensor represents the tightness of the wearable device. 
     
     
         14 . The wearable device of  claim 13 , wherein a pressure value detected by the pressure sensor corresponds to an overlapping length between the two straps, the controller is configured to obtain a target overlapping length according to a target pressure value, and to obtain a current overlapping length between the two straps, so as to obtain a length adjustment value according to the target overlapping length and the current overlapping length, so that the tightness adjustment mechanism adjusts the overlapping length between the two straps to the target overlapping length according to the length adjustment value. 
     
     
         15 . The wearable device of  claim 14 , wherein the pressure sensor is configured to detect an actual pressure value after the overlapping length between the two straps is adjusted to the target overlapping length, and the controller obtains the actual pressure value and determines whether a difference between the actual pressure value and the target pressure value is less than or equal to a preset pressure difference; and/or
 the target pressure value comprises a test pressure value, the wearable device is a wrist-worn device, and when the wrist-worn device is at a tightness corresponding to the test pressure value, the wrist-worn device can be used for testing blood oxygen saturation.   
     
     
         16 . The wearable device of  claim 1 , wherein the wearable device further comprises a prompter electrically connected to the controller, the prompter comprises at least one of a display screen, a speaker and a vibrator, and the prompter is configured to receive and feedback an adjustment instruction generated by the controller. 
     
     
         17 . The wearable device of  claim 1 , wherein the two straps are detachably connected to the device body, one end of each of the straps is provided with a locking protrusion, and each of both ends of the device body is provided with a locking groove, and the locking groove is engaged with the locking protrusion;
 wherein the locking protrusion provided on at least the strap provided with the color sensor is a conductive locking protrusion, an electronic component on the strap is electrically connected to the conductive locking protrusion, the locking groove corresponding to the conductive locking protrusion is provided with a second conductive contact therein, the second conductive contact is electrically connected to the controller, and the conductive locking protrusion can be in contact and conduct with the second conductive contact after being engaged with the locking groove.   
     
     
         18 . The wearable device of  claim 12 , wherein the second conductive contact is provided on a conductive pin or a conductive elastic piece in the locking groove, one end of the conductive pin or the conductive elastic piece is connected to a wall of the locking groove and is electrically connected to the controller, and another end of the conductive pin or the conductive elastic piece is provided with the second conductive contact, to contact and conduct with the conductive locking protrusion.